.In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.

The theoretically correct mixture of air and petrol is

The elay period in compression ignition engines depends upon

The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.

Lubrication in I.C. engines dissipates the heat generated from the moving parts due to friction.

A two stroke cycle engine gives __________ mechanical efficiency than a four stroke cycle engine.

Light weight substances can not be effective moderators.

Theoretically, a four stroke cycle engine should develop __________ power as that of a two stroke cycle engine.

The nuclear radiators produced in a reactor which must be sheilded are